单项选择题

From the last paragraph we know that ______.

A．forgetfulness is a response to learning
B．memory is a compensation for forgetting
C．the memory storage system is an exactly balanced input-output system
D．the capacity of a memory storage system is limited because forgetting occurs

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单项选择题

According to the text, if a person never forgot ______. A) his ability to learn would be improved C) he would survive best B) he would have a lot of trouble D) the evolution of memory would stop

A．According to the text, if a person never forgot ______.
B．his ability to learn would be improved
C．he would have a lot of trouble
D．he would survive best
E．the evolution of memory would stop

单项选择题

In this article, the author tries to interpret the function of______. A) remembering C) memory B) forgetting D) experiencing

A．In this article, the author tries to interpret the function of______.
B．remembering
C．forgetting
D．memory
E．experiencing